Uncaught Error: only one instance of babel-polyfill is allowed

Hi there,

I have an error in developer console with custombox.legacy.min.js?ver=1.9.2:15:

Uncaught Error: only one instance of babel-polyfill is allowed
    at Object.<anonymous> (custombox.legacy.min.js?ver=1.9.2:15)
    at Object.1.2 (custombox.legacy.min.js?ver=1.9.2:15)
    at s (custombox.legacy.min.js?ver=1.9.2:15)
    at e (custombox.legacy.min.js?ver=1.9.2:15)
    at custombox.legacy.min.js?ver=1.9.2:15
(anonymous) @ custombox.legacy.min.js?ver=1.9.2:15
1.2 @ custombox.legacy.min.js?ver=1.9.2:15
s @ custombox.legacy.min.js?ver=1.9.2:15
e @ custombox.legacy.min.js?ver=1.9.2:15
(anonymous) @ custombox.legacy.min.js?ver=1.9.2:15

Every link to custombox.legacy.min.js?ver=1.9.2:15 goes to /wp-content/plugins/popup-anything-on-click/assets/js/custombox.legacy.min.js?ver=1.9.2

Any idea?

Regards,